diff --git a/setup.cfg b/setup.cfg
index a96ef37..b2a4e50 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -16,6 +16,7 @@ console_scripts =
     benchcab=benchcab.main:main
 
 [tool:pytest]
+testpaths = tests
 addopts =
     --doctest-modules
     --doctest-glob='*.rst'